<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title></title>
  </head>
  <script src="./js/browser.js" charset="utf-8"></script>
  <script src="./js/react.development.js" charset="utf-8"></script>
  <script src="./js/react-dom.development.js" charset="utf-8"></script>

  <body>
    <div id="box">



    </div>

  </body>

  <script type="text/babel">

      class MyComponnent extends React.Component {
         render(){
           return <span>hello!my React</span>
         }
      }

      window.onload = function(){
        let box = document.getElementById('box');
        ReactDOM.render(
           <MyComponnent/>,
           box

        )
      }


  </script>
</html>
